Chables pace



C. PACK. CASTING PROCESS, APFUCA'HOII HLED MN. 13. l9l9.

Patented May ,1919. 3

2 sump-swish -out the-core ifor the main body portion. In

' a hole, or o ening in what should be one of crimes rncx, or BROOKLYN,

new Yo BK, ASSiGNOR T0 DOEHLEBt-DIE CASTIKG,

A c'omrm, or BROOKLYN, nnwzo'nx, a conromrrpn 0E'NEW,Y03K.

casrmeraocrss.

To all tohom it-may concern: Be-it knownthat I, CHARLES PACK, a

citizen of the United States, residing-at the borough of Brooklyn, in the city of New York,.-county of Kings, and State of New York, have invented certain new and usebent at right angles to its main body portion, it would. be manifestly impossible to castormold-the same, as an integral con.- struction, aboutv three cores, and then withdraw all of the cores in the usual manner, because there would'be no way [of getting such'acase,- in accordance with. my inven' tlon the core .whichi-by the usualpractice 0011 do not be removed, is allowed to extend out through. the die -or-mold, and thus form the finishe walls of the object being 5 after When the casting has been pouredithe coms' are-withdrawn, andthe edges 0t t e hole openingl-lreferred to are coated with a solder, w ich the object is again placed in a suitable die, and a core inserted in the so as tofill up the hole or nearest end, so as. tocover the hole or open- -ingreferred to. Metal may now be poured into the die or mold and against the core,

openingmake an integral structtre with the original Icastvingno perce" tible'joint. The same general process My used in various situations, as for example, in case it is desired to caste tubular-bony having a. curved. surface at the intersection "of two portions which are disposed .at an angle to each other. In such-a case the curved surface may be formed byan extra core, which is withdrawn throu h an opening which is latertimiedor so dered and then filled up, by the aid of an additional core, in the manner described, above. Y In order that a clearer understanding of my invention may be had, attention is here- -by directed to the accompanying drawings, owning pait. of this appllcatlon, and illus- S pecification' of Letters Patent. Patehted Application filed January 13, 1919. Serial No. 270,917, a

' form of step in the process; Fig.

trating certain ways in which myinvem tion may be carried out. Inthe-drawings,

Figure 1 is; a, plan view; of a die -'showing what maybe a tone arm; in process of formation therein, in' cross section, with 2 wes I core pinsin position; section taken on li-ne 2'2-'0f l' F shown inFig'.-1;'Fig:'4 is'an' e'n'dyiew'of the same; Fig.6 is Fig. 1 showing a fu erstep in the ess; Fig, 5 is 'a'front elevation in the receding-figures; 'Fi-g. 7. isja Ta viewo being-cast being .Fig. 8 is asimi a fs-' vis a'partialplan -View of the. tone un view similar-w ems section of the completed objectfforin d a die' or mold showing aJiIio" construction cast, the object 79 shown in cross, section? r view. showing a further 9 is an end view correspond-ingto the operation l ont elevation Fig. 8; and'Fig.'-10-is a partly shown object. g

Referring first to the for m of ni inv tion indicated: in Figs. 1"to; 6- inc; nsi've, have indicatedthe casting of ahblloiv tubib lar arm having a main-tapefinghori'zontaI in secti'0n"of the portionand a'pair of end portions a 3. which are ofi's'et at right angles sem he U portion 1. Obviously, If aware attempted? to cast this-object as an eem t1on aboutthree. corespit wof dbe inn 0' ble to withdraw"'tlie core about whi'c portion 1 wascast. In" accordance wif' inventions. core 4 is usedto form the portion 1 of the-tone arm or tubular'ql lfi b .9-

coreextendingout dtjflie} to'be cast this A diet toxthe' an. Strai ht cores c are used to form the g 1511 portions, of the tone in the usual'wa cores being the' result that 'the object is corn lletely' formed about the'three cores, except gas-nit, fact that there isa I at the end of the portion 1 .above the offset end 6 thereof, through which hole the core 4 extends -The metal llg 'n poured the cores are withdrawn, the core 4 being withdrawn through the opening 8; s j I The edges of theope'ning 8 are now given the,

hole or opening .8 for-moi of the object 190;

. v f eproperly pos1tioned i'n 0 main cavities of t e die, the metal is poured,with

a light coating with a molten soldering or H tinning mixture and the obj ect' placed in am vside the surface of the tone arm-Kin which the- .5 hole 8 appears. The die being suitably;

' gatedfas shown-"at 5, moltem metal is poured therein against, the end "hf ing 8 and make an integral con ruction therewith. When the metal-hasfsufll' solidified? the bore pin" :9 -is -iv v"ith( ii" wn l d theopening 8': will 'befound tiifhair' I been completely filled so that an struc'tion is presented in Whieh'i 1 apparentlafterja slight polishng A further application 5.1 the -gizriheiele 'illu stratedlinFi-gsi H010 inclusive of. the drawings. Ordinarily when a hollow elbow "'or .othenf-tllblllflfobject having' fportions whichmee at an; angle is east,1'it' 1s: neees- 4' sarylijhat the A angular, portions [should 'in-' F '*terseet with astraight-"llne-joint becau o the tnecessjity of withdrawing the-core .pin's .ee mi te s: y P e S g-m inane v.tionf;howevet-5 it is: possible .pro uce' anydesired-surface attheinterseotion ofthegan'g i ar portions; oi such a construe b th' the. inner-sand *Q 4o the -straight nd' porti ns, 11' and .4255.- f the 'cdnstmctl'qm Ifals'dma-keuse of. an ,ditiona l; core. pin;- 1-6 ,which .is-mserted at an;

the thefd, red. ourvedsurface 17 at the mner do the two straight end parts of the elbow.

The (fore pins being arranged as described the molten'metal is poured after which the core pinsjlylh and. 1-6 are withdrawn, the pins 14 andf'lfi being withdrawn through the ends of the elbow the usual manner while the pi'n 16is. withdrawn inthe directioi .of'its length through the: opening 18,

which isformed infthe' vouter curved surface of theflelbow by the extension of core p'in'lfi throughf the s'ame. Th

18 jmaynew here I I r'neta'l; suchies e tiiblesold'er-ing or tin: nirig'co' tionfpla'ced, on the same; after edges of'the opening v opening 18 'an d. complete the structure of pin 9 toaa sufliciene Xtentflto-fill he open-B the or. scribed.

y at f'ght' anglestoneaeh other; togethe by- '9, egradual, v I

c0n 1p1ete sav e; at a point at Which an opena angle;- nrayjbe ascentpli hedby" the of asuitable;- die 13. in.

the'elbow, at the interswdtionhetween insertirg anotheroore within the object to.

- whi'qlithe-elbow i'sposl tloned in a suitable] closed surfaceofthe finished. obJeot, drawdie l3":'i n (l an additional corevpin If) is inthrough the straight end portion 11.

8.-- M'oltemmetal is then poured into. the die 13' through asuitable gate 50 as" to-fill the solidifiedfthecjore pin 19 is withdrawn.

The-drawings illustrating my invention are, offleourse, somewhatdiagrammatic, it

. not being deemedessential, for example, to Illustrate the manner inwhich the-dies "are gated; When. the opening '8, as'shown in Figs? and 4, and the opening -18,as shown in Fig ,{aire to be filled up, the-dies 5 and 13 in iohixthe objects-are placed may oonvem 1,1y he gated atpo'ints' adjacent 23%;Whlch are to be'filled up as deprocess is particularly adapted for the manufacture of finished castings by the pressure' die casting method. It will beobvious that my invention is not limited in its applicability to theconstruct-ions described' and illustrated, these" latter being. merely given fblypurposesof illustration -and;,exemplification. .i l

'Whatl claim H 7 1. A method of castinga tubular ay-ea, consisting in first v oasting-"such; an objectmg in'tlie object" is left,- 'and then castinga v closure for said opening; i e eii wated. ,e :Pi fi la&igh core? 1 pins -14Yand 1.5 whieh are-a daptedito dorm 2. method at castinga tubular-object, consisting .in first casting such an object completesaye at-a point'atwhich-an openingin the object is left,,treating the-edges of: E .sald opening, and'then cast-inga olosure'for said. opening. a

'methdd of casting a tubular-objeet; "consisting. in castingsuoh an ohjeetgabout one'or' more cor' es,*o'ne of which extends" thrdughwhatw'i'll be a closed surfaee of-thefinished ,object, drawing" the L core 0: eor'es, :and thencastin- -a. closure for ytheopening leftby the with rawal ofsa-id extended'oore'. 1'1 4. A method of'oasting a tubular object, consisting in tasting such an object about one or more cores, ,one. Rot which extends through what. will be a closed surface of the finished object, .drawingithe 'core'or cores, 1

cover the opening-left by thewithdrawal of 1 said extended core,- and casting a closure'forw 1 said opening against said last named-core. 1 25 5. A method of casting a tubular object, consisting in casting such an object inn.- die or mold with theaid of oneor more, cores- 1 one of whichextends through what'willflbe airg the core or cores, applying molten metal 1-310 2 to the ed es of the opening left b3 the withdrawal said extended core, and then casting a closure for said opening.

6. A method of casting a tubular object having bent or curved portions, consisting in so locating a plurality of (:OIBS'lIl a die, in an angular relation, as to form a desired sec tion, with an elongated. one of the same extending through what will be a closed surface of the finished object, pouring molten metal around said cores in the die, to form the complete object except for the opening through which said elongated core extends,

i in straight lines from end or other desired openings of the finished object, and so 10- cating another core that the same extends through what will be a closed surface of the finished object, ouring molten metal around said cores in t as die, to form" the complete object except for the temporary opening through which said last named core extends,

drawing said cores, and filling said temporary opening with metal to complete the structure of the object.

8. A method of casting a tubular object having bent or curved portions, consisting in so coating two or more cores in a die as to form a desired section, with one of the same extending from what will be an end or other opening'of the finished object, and

with an adjacent one of said cores extending through what will be a closed surface of the finished object, pouring molten metal around said cores in the die, drawing the cores, placing molten metal on the edges of the open-I ing through which said second core was withdrawn, placing the obilect in a suitable die, inserting a core throng an end or other opening thereof to cover the said open ng through which the second core was withdrawn, pouring molten metal against said corein thedie to close said opening and complete the structure of the object, and

withdrawin said core.

9. A met od of casting a tubular object, p l

having straight portions at an angle to each other connected by a curved surface, consisting in ositiomng cores in a die to form the straig t portions, and a third core between the same in position for its end surface to form the desired curved surface of the object, said core extending through what will be the wall of said ob ect opposite to said curved-surface, pouring molten metal around said cores in the dle, drawing the cores, placing the object in another die with a core inserted through one ofsaid straight portions to cover the openin through which 1 said third core was w t rawn, uring molten metal against said core to l said o ening and complete the structure of the 0 ject, and withdrawing said core.

This s ecification signed and witnessed this 7th ay of January, 1919.

Witnesses:

Fun C. S'rom'mo, Enmmn J. Warn.

CHARLES PACK. 

